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Maximum size : 15 cm

Green Phantom Plecostomus - Hemiancistrus Subviridis : Complete Fish Profile & Care Guide

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As juvenile Green Phantom Plecos (Hemiancistrus Subviridis) are peaceful, they are perfect for peaceful community aquariums. However, it is crucial to note that as they grow, they become more territorial and aggressive, particularly the males. To ensure their well-being, it is best to house Green Phantom Plecos in a tank with medium to large fish that swim in different areas of the tank. They should also have few, if any, other bottom dwellers. For those with larger tanks, small groups of these Plecos can be kept together, provided that their rocky territories are designated when arranging the decor. Keep in mind that these fish are not recommended for novice aquarists. As a species that requires a significant weekly water change, they are intolerant of organic waste and need pristine water conditions. Therefore, advanced fishkeepers with ample experience are best suited to provide adequate care for this species. Green Phantom Plecos exhibit a stunning colouration with a body that ranges from dark yellow to light olive green, covered with yellow spots from the midsection to the head. Their dorsal, pectoral, and ventral fins also display yellow highlights. Interestingly, their stomachs are transparent.

Green Phantom Plecostomus Photos

Sexual Dimorphism

Differentiating between male and female Green Phantom Plecos is typically a straightforward process. Generally, adult males will have a more significant and broader head, with slightly flatter features. They will also have longer pectoral fins and appear hairier than females, with more prominent dermal teeth. Furthermore, males tend to be somewhat larger than their female counterparts.

Quick Facts

Scientific NameHemiancistrus Subviridis
Year Described2005
Other NamesLemon Spotted Green Pleco
OriginsVenezuela Colombia
Max Size15 cm
Aquarium LevelBottom
Best kept asGroups 5+
Lifespanup to 8 years

Water Parameters

Water TypeFreshwater
PH5.5 - 7.5
GH2 - 10
TDS18 - 179
78 - 86
25.6 - 30

Natural Habitat

The Green Phantom Pleco is a unique and striking species that originates from the Rio Ventauri and the Rio Orinoco in Amazonas state, Venezuela, and Columbia. In their natural habitat, these Plecos can be found in fast-moving and highly oxygenated waters that are warm and enriched with rocky areas in rivers. The rocky areas are typically found between boulders and granite bedrock, which provide hiding places for these fish. Their natural environment is a wonder to behold, and recreating it in a well-designed aquarium will offer a spectacular sight.
 Orinoco - Venezuela
Venezuela Flag
 Orinoco - Venezuela
Venezuela Flag


The Green Phantom Pleco can be successfully bred in an aquarium environment. During the breeding process, the male will seduce the female into his cave where the eggs are laid and fertilized. The male then stands guard at the entrance of the cave to protect the 30 to 45 eggs until they hatch, which usually takes between 3 to 4 days. Once hatched, the fry remain in the cave for approximately ten days while they absorb their yolk sac, after which they begin to explore their surroundings in search of food. To ensure the healthy growth of the fry, it is essential to provide them with a diet of infusoria, crushed flake, bloodworm, algae wafers, and blanched vegetables such as squash and zucchini. However, success in breeding Green Phantom Plecos relies heavily on maintaining a well-oxygenated, spacious tank, pristine water conditions, and a high protein diet. So, if you' re up for the challenge, breeding these magnificent creatures can be a highly rewarding experience.

Diet & feeding

In the domestic setting, the Green Phantom Pleco subsists mainly on algae and residual foods. To ensure adequate nutrition, supplement their diet with commercial aquarium foods formulated for bottom feeders, such as sinking wafers and pellets. Additionally, meaty foods such as bloodworms, daphnia, and brine shrimp, as well as blanched vegetables like spinach and courgette, are also relished by this species and should be included in their regular feedings.

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